// created by gpake
(function () {
	var config = {
		qiniuUploadURL: "",
		qiniuImageURLPrefix: "",
		qiniuUploadToken: "",
		qiniuUploadTokenURL: "",
		qiniuUploadTokenFunction: null,
	};

	module.exports = {
		init: init,
		upload: upload,
	};

	// 在整个程序生命周期中，只需要 init 一次即可
	// 如果需要变更参数，再调用 init 即可
	function init(options) {
		config = {
			qiniuUploadURL: "",
			qiniuImageURLPrefix: "",
			qiniuUploadToken: "",
			qiniuUploadTokenURL: "",
			qiniuUploadTokenFunction: null,
		};
		updateConfigWithOptions(options);
	}

	function updateConfigWithOptions(options) {
		if (options.uploadURL) {
			config.qiniuUploadURL = options.uploadURL;
		} else {
			console.error("qiniu uploader need uploadURL");
		}
		if (options.uptoken) {
			config.qiniuUploadToken = options.uptoken;
		} else if (options.uptokenURL) {
			config.qiniuUploadTokenURL = options.uptokenURL;
		} else if (options.uptokenFunc) {
			config.qiniuUploadTokenFunction = options.uptokenFunc;
		}
		if (options.domain) {
			config.qiniuImageURLPrefix = options.domain;
		}
	}

	function upload(filePath, success, fail, options) {
		if (null == filePath) {
			console.error("qiniu uploader need filePath to upload");
			return;
		}
		if (options) {
			init(options);
		}
		if (config.qiniuUploadToken) {
			doUpload(filePath, success, fail, options);
		} else if (config.qiniuUploadTokenURL) {
			getQiniuToken(function () {
				doUpload(filePath, success, fail, options);
			});
		} else if (config.qiniuUploadTokenFunction) {
			config.qiniuUploadToken = config.qiniuUploadTokenFunction();
		} else {
			console.error(
				"qiniu uploader need one of [uptoken, uptokenURL, uptokenFunc]"
			);
			return;
		}
	}

	function doUpload(filePath, success, fail, options) {
		var url = config.qiniuUploadURL;
		var fileName = filePath.split("//")[1];
		if (options && options.key) {
			fileName = options.key;
		}
		var formData = {
			token: config.qiniuUploadToken,
			key: fileName,
		};
		uni.uploadFile({
			url: url,
			filePath: filePath,
			name: "file",
			formData: formData,
			success: function (res) {
				var dataString = res.data;
				var dataObject = JSON.parse(dataString);
				//do something
				var imageUrl = config.qiniuImageURLPrefix + dataObject.key;
				dataObject.imageURL = imageUrl;
				console.log(dataObject);
				success(dataObject);
			},
			fail: function (error) {
				console.log(error);
				fail(error);
			},
		});
	}

	function getQiniuToken(callback) {
		uni.request({
			url: config.qiniuUploadTokenURL,
			success: function (res) {
				var token = res.data.uptoken;
				config.qiniuUploadToken = token;
				if (callback) {
					callback();
				}
			},
			fail: function (error) {
				console.log(error);
			},
		});
	}
})();
